diff --git a/Plugins/playptmod/playptmod/ptmodDecoder.m b/Plugins/playptmod/playptmod/ptmodDecoder.m
index 4c0215738..204a0fdbb 100755
--- a/Plugins/playptmod/playptmod/ptmodDecoder.m
+++ b/Plugins/playptmod/playptmod/ptmodDecoder.m
@@ -89,6 +89,8 @@ BOOL probe_length( void * ptmod, unsigned long * intro_length, unsigned long * l
     {
         if ( !probe_length(mod, &vblank_intro_length, &vblank_loop_length, 1, data, size, track_num) )
             return NO;
+        if (vblank_loop_length == 0)
+            can_be_vblank = NO;
     }
     else
     {